Perspctv.com is a site whose singular function is to draw results from feeds such as Twitter, Technorati, and CNN. Type your subject into the search box and the site displays the results into three categories, "recent tweets, recent blogsphere mentions and google search volume." The site whose tagline is,"Compare, analyze, monitor... Your dashboard on anything," also allows to you to compare different topics with your information resulting into a graphic display.
Here's another noteworthy site. via Babs